CZ239193A3 - Press with at least two pressure spaces - Google Patents

Abstract

A press for pressing plate-like work pieces especially made of wood or wood-like materials has at least two press chambers (5, 6) arranged one above the other, of which each press chamber (5, 6) is situated between a fixed pressing table (2, 3) and a lifting table (4) movable relative thereto in the pressing direction. The movable lifting table (4) is driven by lifting cylinders (7) supported by thrust bearings fixed to the frame. The particular feature of this press resides in the fact that in each case a first press chamber (5) and a second press chamber (6) are situated between an upper fixed pressing table (2) and a lower fixed pressing table (3) and these two press chambers (5, 6) are separated from one another by a lifting table (4) arranged therebetween. Consequently, the two press chambers (5, 6) can be alternately opened and closed via the lifting cylinders (7) connected to the lifting table (4). <IMAGE>

Description

Press with at least two pressure spaces - - - -

Technical field

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a press for compressing sheet-like materials with at least two pressure spaces.

BACKGROUND OF THE INVENTION

In fvebbhfío Ufb '' ‘’ - - * - ''. it is connected to the fixed press table by a downward and upward movable table, and the two movable tables can be independently controlled by lifting cylinders so that the pressing spaces adjacent to both sides of the fixed press table can be independently opened and closed. Accordingly, each press chamber, also called a pressurized chamber, can be individually filled or removed from the press material, so that it is possible in principle to use different press cycles for the two press spaces adjacent to the fixed table.

In practice, the molded material, generally arranged in the form of a sandwich which is pressed using heat, must be kept under pressure for a specified time and this residence time in the press is used to allow the material to be exchanged in an adjacent open molding space. By correspondingly extending the accessory of the press, it can be achieved that the time for changing the material in the open press space is as long or even shorter than the time required to press the material in the closed press space.

Accordingly, the invention is based on the requirement to provide a press of this type in which two adjacent pressing spaces can be opened and closed alternately.

SUMMARY OF THE INVENTION

The aforementioned drawbacks are largely eliminated by a press having at least two pressure spaces according to the invention, in which the first pressing space and the second pressing space are located between the fixed upper table and the fixed lower table and the two pressing spaces are separated from each other. the movable press table arranged between them and the rollers connected to the movable table are opened and closed alternately.

It is essential for the press according to the invention that only one movable table is required between two fixed press tables, which reduces production costs, since the movable drive table is structurally more demanding than the fixed table mounted on the machine stand. Thus, the movable table has a dual function, since in the first working cycle it presses the material in one pressing space against the first fixed press table while the second pressing space is open and in the second working cycle presses the material in the second pressing space against the second fixed table while the first press space is open.

Preferably, double-acting cylinders are used to drive the movable table and are mounted between the movable table and upward or downwardly to an appropriate anchorage on the machine stand.

It is advisable to attach the rollers to the upper or lower surface of an adjacent fixed table, as this shortens the force contact path. The movable table can also be driven by rollers positioned up or down, which depends on the kind of pressing forces required. Since the press spaces must not be limited by the rollers, they are preferably arranged on the outside of the press and the respective fixed table.

The press according to the invention can be expanded in a modular manner. Thus, a third press space may be provided above the upper or below the lower press table, which is limited by a second movable table above or below it, driven by rollers anchored to the machine stand.

Such presses with three pressing spaces or even one with two adjacent pressing spaces, which can be opened and closed alternately by two, can be combined and arranged one above the other at will. Thus, a fixed unit can be formed from two fixed tables and a movable table separating the two pressing spaces between them. A further press unit may be formed by adding two such fixed press tables with press spaces formed between the movable table between them by a third press space and a second movable table arranged above or below the original unit. The molding units formed in this way can be freely combined with each other, and the units adjacent to the fixed table can always have one table in common.

The press according to the invention can also be designed as a so-called &quot; wiring, in which the pressing spaces are divided into two or more storeys by means of intermediate plates. If desired, these plates can be heated.

BRIEF DESCRIPTION OF THE DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS The invention will be explained in more detail in the drawings, in which Fig. 1 shows a side view of a press with three superimposed press spaces and Fig. 2 shows a side view of a similar press with four superimposed press spaces.

DETAILED DESCRIPTION OF THE INVENTION

FIG. 1 shows a machine stand 1 having vertical columns which, via suitable fasteners 12, are connected to an upper fixed press table 2 and a lower fixed table 3. Between the two fixed tables 4 and 3 there is a height-adjustable table 4 which defines upwardly the first pressing space 5 and downwards the second pressing space 6. Since the spacing of the fixed tables 2 and 2 is constant, the height of the pressing spaces 5 and 6 varies depending on the movement of the adjustable table 4 between the two fixed tables 2 and 3. 1, so that in the embodiment of FIG. 1, when pressing in the second lower space 6, the upper space 5 is open. The molded material inserted into the pressing spaces 5 and 6 is not shown in detail in the drawing, in spaces 5 and 6 only intermediate plates 8 can be seen which divide the spaces 5 and 6 into several levels.

The adjusting table 4 is driven by double-acting cylinders 7, which are articulated externally on the adjusting table 4 as well as on the upper fixed table 2. In principle, such further drive units can also be arranged between the adjusting table 4 and the lower fixed table 3 if the upper rolls 7 cannot themselves provide the necessary pressing pressure.

The above-described unit with both pressing spaces 5 and 6 as well as the upper fixed pressing table 2, the lower fixed table 3 and the adjustable table 4 constitutes the basic unit for the kit, which can be either double or multiple or can be extended by only one pressing space with movable table.

This last embodiment is shown in FIG. 1, in which below the lower fixed table 3 there is a further adjustable table 9 driven by rollers 11, which forms a third pressing space 10 between itself and the lower table 3 of the upper pressing unit arranged above it. divided by inserted plates into several floors. This arrangement can also form a pressing unit which can be further extended, for example, upwards by a pressing unit formed by an upper and a lower fixed table and a movable table lying between them.

Giant. 2 shows a press which is formed by two superimposed units, referred to above as the base unit. On the contact of both pressing units can

- β be arranged common fixed press table 2, 3, whereby one unit is designed as a so-called. This saves a fixed press table.

Claims (7)

PATENT CLAIMS ~ - - - 1. A press having at least two pressing spaces arranged one above the other for pressing plate-like panels, in particular of wood or similar materials such as blockboard, door or parquet panels, each located between a fixed pressing table and a table movable in the pressing direction, the movable table being driven by opposed rollers anchored on the machine stand, characterized in that the first pressing space (5) and the second pressing space (6) are each between a fixed upper table (2) and a fixed lower The table (3) and the two press rooms (5, 6) are separated from each other by a movable press table (4) arranged therebetween and by means of rollers (7) connected to the movable table, they alternately open and close. 2. A press according to claim 1, characterized in that the cylinders (7) are double-acting and arranged by moving the table upward and / or downward to the stand (1) of the machine ^1. Press according to claim 1 or 2, characterized in that the rollers (7) are arranged on the outside outside the movable table (4) and on at least one of the fixed press tables (2,3). Press according to one of Claims 1 to 3, characterized in that a third press space (10) is located above or below the upper fixed press table (2) or below the lower press table (3). arranged by a second movable press table (9), driven by opposing rollers (11) anchored on the machine stand (1). Press according to one of Claims 1 to 4, characterized in that two fixed pressing tables (2 and 3) and pressing spaces (5 and 6) disposed therebetween separated by a movable pressing table (4) form a first pressing unit and such a unit completed o the third pressing space (10) as well as the second movable pressing table (9) form another pressing unit and at least two of these first and / or second pressing units are arranged one above the other, the units adjacent to the fixed table each having this table (2), 3) common. Press according to one of Claims 1 to 5, characterized in that the individual pressing spaces (5, 6, 10) are divided by intermediate plates (8) into two or more storeys.